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<FONT color="green">001</FONT>    /**<a name="line.1"></a>
<FONT color="green">002</FONT>     * $Id: AsyncUtil.java 179 2012-06-21 16:08:46Z steven.jardine@gmail.com $<a name="line.2"></a>
<FONT color="green">003</FONT>     */<a name="line.3"></a>
<FONT color="green">004</FONT>    package com.gwt.ss.client;<a name="line.4"></a>
<FONT color="green">005</FONT>    <a name="line.5"></a>
<FONT color="green">006</FONT>    import com.google.gwt.core.client.GWT;<a name="line.6"></a>
<FONT color="green">007</FONT>    import com.google.gwt.user.client.rpc.ServiceDefTarget;<a name="line.7"></a>
<FONT color="green">008</FONT>    <a name="line.8"></a>
<FONT color="green">009</FONT>    /**<a name="line.9"></a>
<FONT color="green">010</FONT>     * Common util methods for Async classes.<a name="line.10"></a>
<FONT color="green">011</FONT>     * <a name="line.11"></a>
<FONT color="green">012</FONT>     * @version $Rev: 179 $<a name="line.12"></a>
<FONT color="green">013</FONT>     * @author Steven Jardine<a name="line.13"></a>
<FONT color="green">014</FONT>     */<a name="line.14"></a>
<FONT color="green">015</FONT>    public abstract class AsyncUtil&lt;T&gt; {<a name="line.15"></a>
<FONT color="green">016</FONT>    <a name="line.16"></a>
<FONT color="green">017</FONT>        private static String calcServiceEntryPoint(String processUrl) {<a name="line.17"></a>
<FONT color="green">018</FONT>            String url = processUrl == null ? "" : processUrl;<a name="line.18"></a>
<FONT color="green">019</FONT>            if (!url.toLowerCase().matches("^https?://.*")) {<a name="line.19"></a>
<FONT color="green">020</FONT>                String hpbl = GWT.getHostPageBaseURL();<a name="line.20"></a>
<FONT color="green">021</FONT>                int idx = hpbl.indexOf("//");<a name="line.21"></a>
<FONT color="green">022</FONT>                String hostContextPath = hpbl.substring(0, idx + 2);<a name="line.22"></a>
<FONT color="green">023</FONT>                hpbl = hpbl.substring(idx + 2);<a name="line.23"></a>
<FONT color="green">024</FONT>                idx = hpbl.indexOf('/');<a name="line.24"></a>
<FONT color="green">025</FONT>                if (idx &gt; -1) {<a name="line.25"></a>
<FONT color="green">026</FONT>                    hostContextPath += hpbl.substring(0, idx + 1);<a name="line.26"></a>
<FONT color="green">027</FONT>                    hpbl = hpbl.substring(idx + 1);<a name="line.27"></a>
<FONT color="green">028</FONT>                    idx = hpbl.indexOf('/');<a name="line.28"></a>
<FONT color="green">029</FONT>                    if (idx &gt; -1) {<a name="line.29"></a>
<FONT color="green">030</FONT>                        hostContextPath += hpbl.substring(0, idx);<a name="line.30"></a>
<FONT color="green">031</FONT>                    } else {<a name="line.31"></a>
<FONT color="green">032</FONT>                        hostContextPath += hpbl;<a name="line.32"></a>
<FONT color="green">033</FONT>                    }<a name="line.33"></a>
<FONT color="green">034</FONT>                } else {<a name="line.34"></a>
<FONT color="green">035</FONT>                    hostContextPath += hpbl;<a name="line.35"></a>
<FONT color="green">036</FONT>                }<a name="line.36"></a>
<FONT color="green">037</FONT>    <a name="line.37"></a>
<FONT color="green">038</FONT>                if (!hostContextPath.endsWith("/")) {<a name="line.38"></a>
<FONT color="green">039</FONT>                    hostContextPath += "/";<a name="line.39"></a>
<FONT color="green">040</FONT>                }<a name="line.40"></a>
<FONT color="green">041</FONT>                if (url.equals("") || url.equals("/")) {<a name="line.41"></a>
<FONT color="green">042</FONT>                    url = "";<a name="line.42"></a>
<FONT color="green">043</FONT>                } else if (url.startsWith("/")) {<a name="line.43"></a>
<FONT color="green">044</FONT>                    url = url.substring(1);<a name="line.44"></a>
<FONT color="green">045</FONT>                }<a name="line.45"></a>
<FONT color="green">046</FONT>                url = hostContextPath + url;<a name="line.46"></a>
<FONT color="green">047</FONT>            }<a name="line.47"></a>
<FONT color="green">048</FONT>            return url;<a name="line.48"></a>
<FONT color="green">049</FONT>        }<a name="line.49"></a>
<FONT color="green">050</FONT>    <a name="line.50"></a>
<FONT color="green">051</FONT>        private T instance = null;<a name="line.51"></a>
<FONT color="green">052</FONT>    <a name="line.52"></a>
<FONT color="green">053</FONT>        private String processUrl = null;<a name="line.53"></a>
<FONT color="green">054</FONT>    <a name="line.54"></a>
<FONT color="green">055</FONT>        /**<a name="line.55"></a>
<FONT color="green">056</FONT>         * Default constructor.<a name="line.56"></a>
<FONT color="green">057</FONT>         */<a name="line.57"></a>
<FONT color="green">058</FONT>        public AsyncUtil(String processUrl) {<a name="line.58"></a>
<FONT color="green">059</FONT>            this.processUrl = processUrl;<a name="line.59"></a>
<FONT color="green">060</FONT>        }<a name="line.60"></a>
<FONT color="green">061</FONT>    <a name="line.61"></a>
<FONT color="green">062</FONT>        /**<a name="line.62"></a>
<FONT color="green">063</FONT>         * @return a new instance.<a name="line.63"></a>
<FONT color="green">064</FONT>         */<a name="line.64"></a>
<FONT color="green">065</FONT>        public T getInstance() {<a name="line.65"></a>
<FONT color="green">066</FONT>            if (instance == null) {<a name="line.66"></a>
<FONT color="green">067</FONT>                instance = newInstance();<a name="line.67"></a>
<FONT color="green">068</FONT>                setServiceEntryPoint(instance);<a name="line.68"></a>
<FONT color="green">069</FONT>            }<a name="line.69"></a>
<FONT color="green">070</FONT>            return instance;<a name="line.70"></a>
<FONT color="green">071</FONT>        }<a name="line.71"></a>
<FONT color="green">072</FONT>    <a name="line.72"></a>
<FONT color="green">073</FONT>        /**<a name="line.73"></a>
<FONT color="green">074</FONT>         * @param processUrl the process url.<a name="line.74"></a>
<FONT color="green">075</FONT>         * @return a new instance.<a name="line.75"></a>
<FONT color="green">076</FONT>         */<a name="line.76"></a>
<FONT color="green">077</FONT>        public T getInstance(String processUrl) {<a name="line.77"></a>
<FONT color="green">078</FONT>            setProcessUrl(processUrl);<a name="line.78"></a>
<FONT color="green">079</FONT>            return getInstance();<a name="line.79"></a>
<FONT color="green">080</FONT>        }<a name="line.80"></a>
<FONT color="green">081</FONT>    <a name="line.81"></a>
<FONT color="green">082</FONT>        /**<a name="line.82"></a>
<FONT color="green">083</FONT>         * @return the processUrl<a name="line.83"></a>
<FONT color="green">084</FONT>         */<a name="line.84"></a>
<FONT color="green">085</FONT>        public String getProcessUrl() {<a name="line.85"></a>
<FONT color="green">086</FONT>            return processUrl;<a name="line.86"></a>
<FONT color="green">087</FONT>        }<a name="line.87"></a>
<FONT color="green">088</FONT>    <a name="line.88"></a>
<FONT color="green">089</FONT>        /**<a name="line.89"></a>
<FONT color="green">090</FONT>         * @return the classes simple name.<a name="line.90"></a>
<FONT color="green">091</FONT>         */<a name="line.91"></a>
<FONT color="green">092</FONT>        private String getSimpleName() {<a name="line.92"></a>
<FONT color="green">093</FONT>            if (instance != null) {<a name="line.93"></a>
<FONT color="green">094</FONT>                try {<a name="line.94"></a>
<FONT color="green">095</FONT>                    String name = instance.getClass().getName();<a name="line.95"></a>
<FONT color="green">096</FONT>                    return name.substring(name.lastIndexOf('.'));<a name="line.96"></a>
<FONT color="green">097</FONT>                } catch (Exception e) {<a name="line.97"></a>
<FONT color="green">098</FONT>                    return "";<a name="line.98"></a>
<FONT color="green">099</FONT>                }<a name="line.99"></a>
<FONT color="green">100</FONT>            }<a name="line.100"></a>
<FONT color="green">101</FONT>            return "";<a name="line.101"></a>
<FONT color="green">102</FONT>        }<a name="line.102"></a>
<FONT color="green">103</FONT>    <a name="line.103"></a>
<FONT color="green">104</FONT>        /**<a name="line.104"></a>
<FONT color="green">105</FONT>         * @return a new instance using GWT.create().<a name="line.105"></a>
<FONT color="green">106</FONT>         */<a name="line.106"></a>
<FONT color="green">107</FONT>        protected abstract T newInstance();<a name="line.107"></a>
<FONT color="green">108</FONT>    <a name="line.108"></a>
<FONT color="green">109</FONT>        /**<a name="line.109"></a>
<FONT color="green">110</FONT>         * Set the process url.<a name="line.110"></a>
<FONT color="green">111</FONT>         * <a name="line.111"></a>
<FONT color="green">112</FONT>         * @param processUrl the processUrl to set<a name="line.112"></a>
<FONT color="green">113</FONT>         */<a name="line.113"></a>
<FONT color="green">114</FONT>        public void setProcessUrl(String processUrl) {<a name="line.114"></a>
<FONT color="green">115</FONT>            assert processUrl != null &amp;&amp; !processUrl.isEmpty();<a name="line.115"></a>
<FONT color="green">116</FONT>            if (!this.processUrl.equals(processUrl)) {<a name="line.116"></a>
<FONT color="green">117</FONT>                this.processUrl = processUrl;<a name="line.117"></a>
<FONT color="green">118</FONT>                if (instance != null) {<a name="line.118"></a>
<FONT color="green">119</FONT>                    setServiceEntryPoint(instance);<a name="line.119"></a>
<FONT color="green">120</FONT>                }<a name="line.120"></a>
<FONT color="green">121</FONT>            }<a name="line.121"></a>
<FONT color="green">122</FONT>        }<a name="line.122"></a>
<FONT color="green">123</FONT>    <a name="line.123"></a>
<FONT color="green">124</FONT>        /**<a name="line.124"></a>
<FONT color="green">125</FONT>         * Set the services entry point.<a name="line.125"></a>
<FONT color="green">126</FONT>         * <a name="line.126"></a>
<FONT color="green">127</FONT>         * @param instance the instance.<a name="line.127"></a>
<FONT color="green">128</FONT>         */<a name="line.128"></a>
<FONT color="green">129</FONT>        private void setServiceEntryPoint(T instance) {<a name="line.129"></a>
<FONT color="green">130</FONT>            ServiceDefTarget target = (ServiceDefTarget) instance;<a name="line.130"></a>
<FONT color="green">131</FONT>            target.setServiceEntryPoint(AsyncUtil.calcServiceEntryPoint(getProcessUrl()));<a name="line.131"></a>
<FONT color="green">132</FONT>            GWT.log("Set " + getSimpleName() + " Service Entry Point as " + target.getServiceEntryPoint());<a name="line.132"></a>
<FONT color="green">133</FONT>        }<a name="line.133"></a>
<FONT color="green">134</FONT>    <a name="line.134"></a>
<FONT color="green">135</FONT>    }<a name="line.135"></a>




























































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